Nut-lock



A.. LOBHNBR. NUT LOCK.

Patented Nov. 3, 1891.

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NiTE STATES PATENT OFFICE.

NUT-LOCK.

SPEGIFICATION forming part of Letters Patenta No. 462318, dated November 3, 1891. Application filed January 3,1889. Serial No.295,37s. (No m del.)

To all whom it may concern:

Be it known that I, AUGUST LOEHNER, a citizen of the United States, residing at St. Louis, in the State of M-issouri, haveinvented certain new and usefulImprovenentsin Fastening Devices for Nuts and Bolts, of which the following is a specilication, reference being had therein to the accompanying drawings.

This invention relates to nut and bolt fastenings for fish-bars at the joints of railwayrails, studs, and other devices, to which ny inprovements may be adapted; and it con sists in certain inprovemen ts in such fastenings, as hereinafter described and claimed.

In the acconpanying drawings, Figure l represents a vertical transverse section of a railway-rail and fish-bars with my improved fastening applied thereto. Fig. 2 is a side view of the same. Fig. represents one of the conical friction-rings employed in the fastening. Fig. 4 shows in section the nut and friction-ring on a bolt.

A designates the railway-rails, and B the fish-bars in their usual positions.

C indicates the fastening-bolt, which is passed through apertures in the rail and fishbars, the said bolt being tlreaded a suitable distance from the end where the securing-nut is applied. Some of the bolt-holes in the fish-bars are reanied out or so formed that they fiare outward, as shown in Fig. 1, to receive the conicalfriction or compression rings a, the said rings being made taperin g on their outer surfaces to fit in the tlaring bolt-holes. Each of said rings a has in its side a slit or opening c, which is closed by the compression of the ring when the nut is screwed on the bolt and the fastening is adjusted. The friction-rings are formed of Copper, brass, or other metal ot less hardness than that of which the bolt or the nut is forned, the latter being either of steel or iron, so that when the fastening is secured by wrenching the nut threads Will be formed by the threaded bolt and nut on the friction-rings, which are in contact with them.

D indicates the securingnut, the threaded aperture through which is made flaring 'from the center of the nut to its base or inward side, so that the outer half of the nut connects with the screw-bolt and the threaded inner half closes on the concal compressionring a, which is in position on the bolt and tapers outward, as shown.

In adjusting the fastening to fish-bars at a joint of rails a bolt C is passed through boltholes in the opposite fish-bars and rail, the threaded part of said bolt extendi'g through a flaring bolt-hole in a fish-bar, and a compression-ring co is then placed on the bolt, the base of the ring being outward, and is pressed into the flaring aperture in the fish-bar. Another of said rings is then placed on the bolt, the base' of the ring being inward, and is pressed against the last-mentioned ring, so that the bases of the two rings are in contact. The nut is then placed on the end of the bolt, and, being turned with a wrench, the rings are conpressed and driven into their seats, respectively, and the rings, being ot metal of less hardness than that ot' the other parts, will yield sonewhat to the pressure and become tightly tted. As the nut is sc'ewed on, screw-threads correspondin g with those on the bolt and nut are forned on the tapering rings, which are in contact with the said threaded bolt and nut. Thus a firn and durable fastening is produced, which will withstand the jarring` or vibration of parts caused by passing trains or the operation of heavy nachinery, the device being adapted for use in the Construction of various inechanical devices.

The compression-ring may be forned of a strip of metal with its ends reduced in thickness, the strip being bent into shape so that one end overlaps the other.

I claim- The conbination, with a screwbolt C, ot' one or more plates provided with fiaring boltholes, two tapering rings placed on said bolt with their bases adjoining, as shown, and a nut, the threaded bolt-hole of which is made partly fiaring, so that it incloses the outer tapering ring, substantially as and for the purpose described.

In testimony whercot I have allixed mysignature in presence of two witnesses.

AU'GUST LOEIINER.

\Vitnes`ses:

VVILLIAM HUMMERTK ADOLPH SOBECK. 

